Urethane of the trichloroethylic alcohol



WILLS'RQTTER AND WALTHER, DUISBERG, 0F MUNICH, B-iND TljRG-ENGAILLSEEKF, Q1 ELBERFELD, GERMANY, ASSIG-NORS TO FARBENEABRIKEN VORM.BAYER AND GQ, 0E LEVERK'USEN, NEARCQLOGNE-OlWTEE-RHINE,

URETHANE 0F THE TRICHLOBOETHYLIC ALCOHOL.

summers.

1,412? 50%, Specification of Letters Patent.

0 Drawing.

To all whom it may concern:

Be it known that we, RICHARD lvlnns'rli'rrnn, WALTHER DUIsBnRG, andTtiReEN CALL- SEN, citizens of Germany, residing at, respectively,Munich, Munich, and Elberfeld, Germany, have invented new and usefulImprovement in Urethane of the Trichloroethylic Alcohol, of which thefollowing is a s 7 ecification.

ur invention relates to a new and valuable product which is chemicallythe urethane of the trichloroethylic alcohol having "the formula:

I GC1,--CHZO.CO.NH,.,

mixture is allowed. to stand during about 24 hours, it is filtered andthe ether is distilled off. The resulting residue, being the urethane oftrichloroethylic alcohol, is

crystallized from ligroin. Our new product is thus obtained in the shapeof white needles melting at from (i l-65 C. It is Patented Aug. 29,1922. Application filed August 11, 1921. Serial No. 491,516". I

easily soluble in alcohol and ether and soluble with difiiculty in coldwater.

Having. now described our invention and 'in what manner the same is tobe performed,

what We claim as new, and desire to secure by Letters Patent, is z- As anew article of manufacture the 'urethane of trichloroethylic. alcohol,having most probably the formula:

CCI,+CH,O-C0.NH

forming when crystallized from ligroin white needles melting at from6t65 0.,

being easily soluble in alcohol and ether;-

soluble with difficulty in cold water; and adapted for being used inmedicine as soporific. I

In testimony whereof we have hereunto set our hands in the presence oftwo subscribing witnesses.

RICHARD WILLSTATTER. WALTHER DUISBERG. TURGEN CALLSEN.

Witnesses:

PAUL DREY,

RIoHAm) Lfrrz,

HANS BRi'IoKNnR,

EDWARD PARMENSKY.

